Interferometer design for writing Bragg gratings in optical fibers

Peter J. de Groot; Xavier Colonna de Lega; Jay Walter Dawson; Trevor W. MacDougall; Minfu Lu; John R. Troll

doi:10.1117/12.472247

20 June 2002 Interferometer design for writing Bragg gratings in optical fibers

Peter J. de Groot, Xavier Colonna de Lega, Jay Walter Dawson, Trevor W. MacDougall, Minfu Lu, John R. Troll

Proceedings Volume 4777, Interferometry XI: Techniques and Analysis; (2002) https://doi.org/10.1117/12.472247
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Bragg Gratings are waveguides, typically single-mode optical fibers, into which a periodic refractive index modulation has been imprinted by a patterned UV exposure. Fiber Bragg Gratings separate telecom frequency bands or compensate for optical dispersion in long-haul fiber networks, and also serve as strain sensors for civil engineering or geophysical studies and oil, gas or mining exploitation. A Bragg Grating writer is an interferometer for generating the UV exposure pattern. It is one of the unusual cases where an interferometer is a production tool, rather than a metrology instrument. In this paper, we review the most common Bragg Grating writing geometry and propose an opto-mechanical structure having minimal adjustment and very high mechanical stability.

Citation Download Citation

Peter J. de Groot, Xavier Colonna de Lega, Jay Walter Dawson, Trevor W. MacDougall, Minfu Lu, and John R. Troll "Interferometer design for writing Bragg gratings in optical fibers", Proc. SPIE 4777, Interferometry XI: Techniques and Analysis, (20 June 2002); https://doi.org/10.1117/12.472247

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